考研But as diet and health improved, children and adolescents have, on average, increased in height by about an inch and a half every 20 years, a pattern known as the secular trend in height.
但随着饮食和健康状况的改善,儿童和青少年的身高平均每20年增加约1.5英寸,这种模式被称为长期身高趋势。
2008年全国硕士研究生招生考试英语试题